How Do Astronomers Know That There Aren't Significant Amounts of Dark

How do astronomers know that there aren't significant amounts of dark matter within our solar system?

A) so much dark matter would affect the amount of energy coming out of the Sun, and we see no evidence for that
B) a lot of dark matter would affect the motions (orbits) of our spacecraft as the move through the solar system, and see no such effect
C) the theory of dark matter, which now explains everything we want to know about it, tells us that it can only exist on the outside of galaxies
D) such dark matter would affect the weather patterns on Earth, and we see no such effect
E) astronomers have now discovered quite a bit of dark matter in the solar system, so the premise of the question is wrong

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